DS90UH925Q-Q1 Datasheet, PDF (34/56 Pages) Texas Instruments – 720p 24-bit Color FPD-Link III Serializer with HDCP

DS90UH925Q-Q1
SNLS336J – OCTOBER 2010 – REVISED NOVEMBER 2014
www.ti.com
Register Maps (continued)
ADD
(dec)
24
25
27
100
Table 6. Serial Control Bus Registers (continued)
ADD
(hex)
REGISTER
NAME
0x18 SCL High Time
Bit(s)
7:0
0x19 SCL Low Time
7:0
0x1B BIST BC Error
7:0
0x64 Pattern
7:4
Generator
Control
3:1
0
REG-
ISTER
TYPE
RW
RW
R
RW
RW
DEFAULT
(hex)
FUNCTION
DESCRIPTION
0xA1
0xA5
0x00
0x10
SCL HIGH
Time
SCL LOW
Time
BIST Back
Channel
CRC Error
Counter
Pattern
Generator
Select
Pattern
Generator
Enable
I2C Master SCL High Time
This field configures the high pulse width of the SCL
output when the Serializer is the Master on the local
I2C bus. Units are 40 ns for the nominal oscillator
clock frequency. The default value is set to provide
a minimum 5us SCL high time with the internal
oscillator clock running at 32.5MHz rather than the
nominal 25MHz.
I2C SCL Low Time
This field configures the low pulse width of the SCL
output when the Serializer is the Master on the local
I2C bus. This value is also used as the SDA setup
time by the I2C Slave for providing data prior to
releasing SCL during accesses over the
Bidirectional Control Channel. Units are 40 ns for
the nominal oscillator clock frequency. The default
value is set to provide a minimum 5us SCL low time
with the internal oscillator clock running at 32.5MHz
rather than the nominal 25MHz.
BIST Mode Back Channel CRC Error Counter
This error counter is active only in the BIST mode. It
clears itself at the start of the BIST run.
Fixed Pattern Select
This field selects the pattern to output when in Fixed
Pattern Mode. Scaled patterns are evenly
distributed across the horizontal or vertical active
regions. This field is ignored when Auto-Scrolling
Mode is enabled. The following table shows the
color selections in non-inverted followed by inverted
color mode
0000: Reserved
0001: White/Black
0010: Black/White
0011: Red/Cyan
0100: Green/Magenta
0101: Blue/Yellow
0110: Horizontally Scaled Black to White/White to
Black
0111: Horizontally Scaled Black to Red/Cyan to
White
1000: Horizontally Scaled Black to Green/Magenta
to White
1001: Horizontally Scaled Black to Blue/Yellow to
White
1010: Vertically Scaled Black to White/White to
Black
1011: Vertically Scaled Black to Red/Cyan to White
1100: Vertically Scaled Black to Green/Magenta to
White
1101: Vertically Scaled Black to Blue/Yellow to
White
1110: Custom color (or its inversion) configured in
PGRS, PGGS, PGBS registers
1111: Reserved
Reserved
Pattern Generator Enable
1: Enable Pattern Generator
0: Disable Pattern Generator
34
Submit Documentation Feedback
Copyright © 2010–2014, Texas Instruments Incorporated
Product Folder Links: DS90UH925Q-Q1